Which of the following statements is false?

a. Use list method extend to add all the elements of another sequence to the end of a list (this is the equivalent of using +=).
b. The following code adds all the characters of a string then all the elements of a tuple to a list:
sample_list = []
s = 'abc'
sample_list.extend(s)
t = (1, 2, 3)
sample_list.extend(t)
c. Rather than creating a temporary variable, like t, to store a tuple in Part (b) before appending it to a list, you might want to pass a tuple directly to extend. In this case, the tuple’s parentheses are optional, because extend expects one iterable argument.
d. All of the above statements are true.

c. Rather than creating a temporary variable, like t, to store a tuple in Part (b) before appending it to a list, you might want to pass a tuple directly to extend. In this case, the tuple’s parentheses are optional, because extend expects one iterable argument.